US12216364B2
Display substrate, manufacturing method thereof and display apparatus
Publication
Application
Classifications
IPC Classifications
CPC Classifications
Applicants
Wuhan BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
Inventors
Qi Chen, Yujie Gao, Wei Wu, Hao Zhang, Yuan Tong, Yichen Zhou, Dang Zhang, Yiyi Zhang, Xiang Liu, Taohe Zhu, Junfeng Dai, Jinli Li, Bo Huang
Abstract
The present disclosure provides a display substrate, a manufacturing method of the display substrate and a display apparatus. The display substrate includes a base substrate; an alignment layer, on the base substrate; a first electrode, located between the base substrate and the alignment layer and being in contact with the alignment layer; and a pattern layer, located between the base substrate and the alignment layer and being in contact with the alignment layer. An orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the first electrode on the base substrate, and a ratio of a contact angle of the pattern layer to a contact angle of the first electrode is greater than or equal to 7/12 and less than 3/2.
Figures
Description
CROSS-REFERENCE OF RELATED APPLICATIONS
[0001]The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/CN2022/102459 filed on Jun. 29, 2022, the entire content of which is hereby incorporated by reference.
FIELD
[0002]The present disclosure relates to the technical field of display, in particular to a display substrate, a manufacturing method thereof, and a display apparatus.
BACKGROUND
[0003]Liquid crystal displays (LCDs) have the advantages of light weight, less power consumption, high image quality, low radiation and portability, have gradually replaced traditional cathode ray tube displays (CRT), and are widely applied to modern information devices, such as virtual reality (VR) head-mounted display devices, laptops, televisions, mobile phones and digital products.
SUMMARY
[0004]Embodiments of the present disclosure provide a display substrate, a manufacturing method thereof, and a display apparatus. A specific solution is as follows.
- [0006]a base substrate;
- [0007]an alignment layer, located on the base substrate;
- [0008]a first electrode, located between the base substrate and the alignment layer and being in contact with the alignment layer; and
- [0009]a pattern layer, located between the base substrate and the alignment layer and being in contact with the alignment layer.
[0010]An orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the first electrode on the base substrate, and a ratio of a contact angle of the pattern layer to a contact angle of the first electrode is greater than or equal to 7/12 and less than 3/2.
[0011]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the pattern layer and the first electrode are arranged in the same layer and made of the same material.
[0012]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, there are a plurality of first electrodes, and the plurality of first electrodes are arranged in an array on the base substrate.
[0013]The orthographic projection of the pattern layer on the base substrate is located in an orthographic projection of a row gap of the first electrodes on the base substrate.
[0014]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the first electrode includes a first strip electrode and a second strip electrode which are integrally arranged. An extension direction of the first strip electrode is intersected with a row direction, a column direction and an extension direction of the second strip electrode. The extension direction of the second strip electrode is intersected with the row direction and the column direction.
[0015]The pattern layer extends in the extension direction of the first strip electrode and/or the extension direction of the second strip electrode.
[0016]In some embodiments. in the above display substrate provided by the embodiments of the present disclosure, the extension directions of the pattern layer are different at two adjacent row gaps.
[0017]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, a line width of the pattern layer is the same as a line width of the first strip electrode or the second strip electrode which extends in the same direction as the pattern layer, and a line distance of the pattern layer is the same as a line distance of the first strip electrode or the second strip electrode which extends in the same direction as the pattern layer.
[0018]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure. the pattern layer includes a plurality of block patterns arranged at intervals at the same row gap of the first electrodes, and the block pattern extends in the row direction.
[0019]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes a first signal line. An orthographic projection of the first signal line on the base substrate is located in an orthographic projection of a column gap of the first electrodes on the base substrate.
[0020]The orthographic projection of the pattern layer on the base substrate does not overlap the orthographic projection of the first signal line on the base substrate.
[0021]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes a transistor. At least part of the first signal lines is electrically connected with the transistor.
[0022]The orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the transistor on the base substrate.
[0023]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the pattern layer includes strip patterns extending in the row direction at the row gap of the first electrodes, and a length of each strip pattern in the row direction is the same as a length of the row gap of the first electrodes.
[0024]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes a second signal line. An orthographic projection of the second signal line on the base substrate is located in an orthographic projection of the row gap of the first electrodes on the base substrate.
[0025]The orthographic projection of the pattern layer on the base substrate is located in the orthographic projection of the second signal line on the base substrate.
[0026]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, a ratio of a width of the pattern layer in the column direction to a width of the second signal line in the column direction is greater than or equal to 3/5 and less than 1.
[0027]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes a second signal line. The orthographic projection of the second signal line on the base substrate is located in the orthographic projection of the row gap of the first electrodes on the base substrate. Two signal lines are correspondingly arranged at the same row gap of the first electrodes.
[0028]At the same row gap of the first electrodes, orthographic projections of the two second signal lines on the base substrate are located in the orthographic projection of the pattern layer on the base substrate.
[0029]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes a first signal line and a second signal line which are intersected and mutually insulated. An orthographic projection of the first signal line on the base substrate is located in an orthographic projection of the column gap of the first electrodes on the base substrate. The first signal line includes an island structure at an intersected position of the column gap of the first electrodes and a gap of the two second signal lines.
[0030]The orthographic projection of the pattern layer on the base substrate is coincided with an orthographic projection of the island structure on the base substrate.
[0031]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes a second signal line and a gate. The second signal line and the gate are of an integral structure and the gate protrudes relative to the second signal line.
[0032]The pattern layer includes a plurality of first partitions intersected with the row direction and the column direction and a second partition extending in the row direction. An orthographic projection of the first partitions on the base substrate is located in an orthographic projection of the gate on the base substrate, and an orthographic projection of the second partition on the base substrate is located in the orthographic projection of the second signal line on the base substrate.
[0033]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes a second electrode located between a layer where the first electrode is located and the base substrate. The orthographic projection of the first electrode on the base substrate overlaps with an orthographic projection of the second electrode on the base substrate.
[0034]In some embodiments, the above display substrate provided by the embodiments of the present disclosure further includes an insulating layer located between a layer where the first electrode is located and a layer where the second electrode is located. The first electrode shields a part of the insulating layer, and the insulating layer not shielded by the first electrode is reused as the pattern layer.
[0035]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, the alignment layer includes a positioning region for arranging a spacer. An orthographic projection of the positioning region on the base substrate is located in the orthographic projection of the pattern layer on the base substrate.
- [0037]providing a base substrate;
- [0038]forming a pattern layer and a first electrode on the base substrate, wherein an orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the first electrode on the base substrate, and a ratio of a contact angle of the pattern layer to a contact angle of the first electrode is greater than or equal to 7/12 and less than or equal to 3/2;
- [0039]coating alignment liquid on the pattern layer and a layer where the first electrode is located; and
- [0040]curing the alignment liquid to form an alignment layer.
- [0042]forming the pattern layer and the first electrode which are arranged in the same layer and made of the same material on the base substrate by adopting the same mask.
- [0044]forming a conducting layer and a photoresist layer successively on the base substrate;
- [0045]providing a mask, wherein the mask only has a pattern for manufacturing the first electrode;
- [0046]skewing the pattern of the mask relative to a region where the first electrode is to be manufactured, so that the pattern of the mask simultaneously overlaps the region where the first electrode is to be manufactured and a region where the pattern layer is to be manufactured;
- [0047]exposing, under shielding of the mask, the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured in different time;
- [0048]developing the photoresist layer to retain the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured; and
- [0049]etching, under shielding of the photoresist layer, the conducting layer to form the pattern layer and the first electrode which are arranged in the same layer, made of the same material and are disconnected.
- [0051]forming the conducting layer and the photoresist layer successively on the base substrate;
- [0052]providing a mask, wherein the mask has a first pattern for manufacturing the first electrode and a second pattern for manufacturing the pattern layer, and the first pattern and the second pattern are disconnected;
- [0053]exposing, under shielding of the mask, the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured simultaneously;
- [0054]developing the photoresist layer to retain the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured; and
- [0055]etching, under shielding of the photoresist layer, the conducting layer to form the pattern layer and the first electrode which are arranged in the same layer, made of the same material and are disconnected.
- [0057]forming the insulating layer which is arranged on the whole surface taking ammonia gas and silane as reaction source gas, wherein a flow ratio of the ammonia gas to the silane is greater than or equal to 2 and less than or equal to 8; and
- [0058]forming the first electrode on the insulating layer in a pixel opening region of the base substrate, wherein the insulating layer outside the pixel opening region is reused as the pattern layer.
[0059]On the other hand, embodiments of the present disclosure provide a display apparatus, including the above display substrate provided by the embodiments of the present disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION OF THE EMBODIMENTS
[0097]In order to make objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It should be noted that sizes and shapes of each diagram in the accompanying drawings do not reflect a true scale, and are merely intended to illustrate the contents of the present disclosure. In addition, the same or similar labels throughout indicate the same or similar components or components having the same or similar functions. In order to keep the following descriptions of the present disclosure clear and concise, detailed descriptions of known functions and known components of the present disclosure are omitted.
[0098]Unless otherwise defined, technical or scientific terms used herein should have the ordinary meaning as understood by ordinary skill in the art to which the present disclosure belongs. “First”, “second” and similar words used in the specification and claims do not represent any order, quantity or importance, and are merely used to distinguish different constituent parts. “Comprise” or “include” and similar words mean that the elements or objects appearing before the word cover the elements or objects recited after the word and their equivalents, but do not exclude other elements or objects. “Inner”, “outer”, “up”, “down” and the like are merely used to represent a relative position relationship, and after an absolute position of a described object is changed, the relative position relationship may also be changed accordingly.
[0099]In the product development process, it is discovered that bulk stains is detected on a liquid crystal display under the L127 gray scale for many times. which affects a display effect. Through screen disassembling and parsing, it is discovered that a phenomenon of alignment layer (Polyimide, PI) accumulation exists in a bulk stain occurrence region, and the more serious the bulk stains, the higher the accumulation of the alignment layer.
[0100]A manufacturing process of the alignment layer mainly includes two steps. First, through an inkjet device, alignment liquid is dripped on a surface of a display substrate to diffuse to form a wet film 102′. Second, the wet film is heated in a pre-curing device to enable a solvent of the wet film 102′ to evaporate to form an alignment layer. In the two steps, contact angles of the display substrate play a crucial role. It is generally recognized that the smaller the interfacial tension between solid and liquid, the smaller the contact angle, the better the degree of wetting of the liquid to the solid, and the more difficult the separation of the liquid and the solid; and the larger the interfacial tension between the solid and the liquid, the larger the contact angle, the worse the degree of wetting of the liquid to the solid, and the easier the separation of the liquid and the solid.
[0101]Through further study, it is found that a film layer in contact with the alignment layer below the alignment layer includes a first electrode located at a pixel opening region and an insulating layer located at a non-pixel opening region, such as an insulating layer corresponding to a gate line of a display panel. A contact angle of the first electrode is 60°, and a contact angle of the insulating layer is 20°-30°. It can be seen that the contact angle of the insulating layer is ⅓ to ½ of the contact angle of the first electrode. A contact angle difference of the two is large. The interfacial tension between the alignment liquid and the first electrode is much larger than the interfacial tension between the alignment liquid and the insulating layer, so the first electrode and the insulating layer form “a pulling effect” on the alignment liquid. causing the wet film 102′ formed by diffusing the alignment liquid being broken and accumulated, as shown in
- [0103]a base substrate 101;
- [0104]an alignment layer 102, located on the base substrate 101;
- [0105]a first electrode 103, located between the base substrate 101 and the alignment layer 102 and being in contact with the alignment layer 102; and
- [0106]a pattern layer 104, located between the base substrate 101 and the alignment layer 102 and being in contact with the alignment layer 102.
[0107]An orthographic projection of the pattern layer 104 on the base substrate 101 does not overlap an orthographic projection of the first electrode 103 on the base substrate 101. A ratio of a contact angle of the pattern layer 104 to a contact angle of the first electrode 103 is greater than or equal to 7/12 and less than 3/2.
[0108]In the above display substrate provided by the embodiments of the present disclosure, the pattern layer 104 and the first electrode 103 which are staggered are both in contact with the alignment layer 102, which is equivalent to that the alignment liquid is coated on a surface of the pattern layer 104 and the first electrode 103. According to the present disclosure, a ratio of a contact angle of the pattern layer 104 to a contact angle of the first electrode 103 is greater than or equal to 7/12 and less than 3/2. For example, the contact angle of the first electrode 103 is 60°, and the contact angle of the pattern layer 104 is greater than or equal to 35° and less than 90°, so that a difference between the contact angle of the pattern layer 104 and the contact angle of the first electrode 103 is smaller. Accordingly, a difference between the interfacial tension between the alignment liquid and the first electrode 103 and the interfacial tension between the alignment liquid and the pattern layer 104 is smaller, so that the “pulling effect” of the first electrode 103 and the pattern layer 104 on the alignment liquid is effectively weakened, and the risk of breakage and accumulation of the wet film 102′ formed by diffusing of the alignment liquid is reduced. In addition, the contact angle of the insulating layer before improvement is greater than or equal to ⅓ of the contact angle of the first electrode 103 and less than or equal to ½ of the contact angle of the first electrode 103. In the present disclosure, the contact angle of the pattern layer 104 is greater than or equal to 7/12 of the contact angle of the first electrode 103 and less than 3/2 of the contact of the first electrode 103. It can be known from comparison, the contact angle of the pattern layer 104 is greater than the contact angle of the insulating layer before improvement. It can be known from the larger the contact angle, the worse the wettability that the wettability of the alignment liquid on the pattern layer 104 is slightly worse than the wettability of the alignment liquid on the insulating layer before improvement. It can be known in conjunction with the above record “the alignment liquid is difficult to transfer on the interface with good wettability, and breakage, shrinkage and accumulation are prone to being generated” that the alignment liquid is easier to transfer on the pattern layer 104 with worse wettability, and breakage, shrinkage and accumulation are difficult to generate. Based on reasons of the above two aspects, the accumulation phenomenon of the alignment layer 102 may be obviously reduced, and a display effect is improved.
[0109]In addition, as shown in
[0110]In some embodiments, the contact angle may be tested through a method as shown in
[0111]Aiming at “adhesive power” of the alignment layer 102 on the first electrode 103 and the insulating layer before improvement, an adhesion measurement experiment of the alignment layer 102 on the first electrode 103 and the insulating layer is carried out. For example, an eraser is used to wipe the alignment layer 102 with the same force, then the residual condition of the alignment layer 102 is observed under a microscope, and it is found from a result that after wiping, the alignment layer 102 remaining on the first electrode 103 is more complete relative to the alignment layer 102 remaining on the insulating layer, which explains that combination of the alignment layer 102 and the first electrode 103 is closer. In addition, it is found that the surface roughness of the first electrode 103 is small, and the alignment layer 102 does not generate an accumulation phenomenon on the first electrode 103. Thus, as shown in
[0112]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as shown in
[0113]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as shown in
[0114]In some embodiments, a mask manufacturing the first electrode 103 in the related art may be used for manufacturing the pattern layer 104. For example, the mask manufacturing the first electrode 103 may be moved in an A direction in
[0115]Under the condition of manufacturing the pattern layer 104 by adopting the mask of the first electrode 103, extra masks for manufacturing the pattern layer 104 may be avoided, which is beneficial to saving costs. As shown in
[0116]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as shown in
[0117]In some embodiments, the above display substrate provided by the embodiments of the present disclosure, as shown in
[0118]In some embodiments, the above display substrate provided by the embodiments of the present disclosure, as shown in
[0119]It should be understood that since there is the insulating layer 106 between a layer where the first signal line 105 is located and a layer where the pattern layer 104 is located, the first signal line 105 and the pattern layer 104 will not be in short circuit. Based on this, in some embodiments, as shown in
[0120]In some embodiments, the above display substrate provided by the embodiments of the present disclosure, as shown in
[0121]In addition, it is found that when an accumulation width of the alignment layer 102 on the second signal line 108 is more than 60% of a line width of the second signal line 108, there will be bad things happening on a macro level. Based on this, in order to avoid bad things happening, in the above display substrate provided by the embodiments of the present disclosure, a ratio of a width of the pattern layer 104 in the column direction Y to a width of the second signal line 108 in the column direction Y is greater than or equal to 3/5 and less than or equal to 1.
[0122]In some embodiments, as shown in
[0123]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as shown in
[0124]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as shown in
[0125]Generally on an opposite substrate opposite to the display substrate, a spacer (PS) keeping the box thickness (Gap) between display substrate and the opposite substrate to be stable is arranged. The spacer (PS) is in contact with the alignment layer 102 at the island structure 51. As shown in
[0126]It needs to be explained that in the present disclosure, the position of the spacer (PS) is not limited to correspond to the position of the island structure 51. In some embodiments, as shown in
[0127]Continuing to refer to
[0128]In some embodiments, as shown in
[0129]It is worth noting that as shown in
[0130]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as shown in
[0131]It needs to be explained that the pattern layer 104 may be manufactured separately by adopting the material of the first electrode 103, or the insulating layer 106 may be reused as the pattern layer 104 by separately adjusting the film of the insulating layer 106, or the forgoing two solutions may be combined. That is, on the basis of adopting the insulating layer 106 to reuse as the pattern layer 104, the pattern layer 104 may further be manufactured by adopting the material of the first electrode 103. In addition, it should be understood that under the condition that the morphology of the pattern layer 104 manufactured by adopting the material of the first electrode 103 is the same as the local morphology of the first electrode 103, the inclined strip structure of the pattern layer 104 and the insulating layer 106 at the gap of the inclined strip structure may be used for preventing the alignment layer 102 from accumulation.
[0132]In some embodiments, in the above display substrate provided by the embodiments of the present disclosure, as shown in
[0133]Continuing to refer to
[0134]In some embodiments, as shown in
[0135]In some embodiments, as shown in
[0136]In some embodiments, as shown in
[0137]In some embodiments, the transistor 107 provided by the embodiments of the present disclosure may be a top gate transistor or a bottom gate transistor. The transistor 107 may be an oxide transistor, an amorphous silicon transistor, and a polycrystalline silicon transistor. The transistor 107 may be a P-type transistor or an N-type transistor. The P-type transistor is conductive when a voltage difference Vgs between a gate and a source and a threshold voltage Vth meet a relationship Vgs<Vth. The P-type transistor is cut off when the voltage difference Vgs between the gate and the source and the threshold voltage Vth meet a relationship Vgs≥Vth. The N-type transistor is conductive when a voltage difference Vgs between a gate and a source and a threshold voltage Vth meet a relationship Vgs>Vth. The N-type transistor is cut off when the voltage difference Vgs between the gate and the source and the threshold voltage Vth meet a relationship Vgs≤Vth. In addition, as shown in
[0138]Based on the same inventive concept, embodiments of the present disclosure provide a manufacturing method of the above display substrate, as shown in
[0139]S3701, a base substrate 101 is provided.
[0140]S3702, a pattern layer 104 and a first electrode 103 are formed on the base substrate 101. An orthographic projection of the pattern layer 104 on the base substrate 101 does not overlap an orthographic projection of the first electrode 103 on the base substrate 101. A ratio of a contact angle of the pattern layer 104 to a contact angle of the first electrode 103 is greater than or equal to 7/12 and less than or equal to 3/2.
[0141]S3703, alignment liquid is coated on the pattern layer 104 and a layer where the first electrode 103 is located.
[0142]S3704, the alignment liquid is cured to form an alignment layer 102.
[0143]In some embodiments, in the above manufacturing method provided by the embodiments of the present disclosure, in the above step S3702, the forming the pattern layer and the first electrode on the base substrate may be implemented through two modes: first, the pattern layer and the first electrode which are arranged at the same layer and made of the same material are formed on the base substrate by adopting the same mask; and second, the pattern layer and the first electrode are respectively formed on the base substrate by adopting two masks, and the pattern layer and the first electrode are located at the same layer and materials of the pattern layer and materials of the first electrode are the same.
[0144]In some embodiments, in the above manufacturing method provided by the embodiments of the present disclosure, the forming the pattern layer 104 and the first electrode 103 which are arranged at the same layer and made of the same material on the base substrate 101 by adopting the same mask may be implemented through the two following possible modes.
[0145]The first possible mode may include the following steps.
[0146]Step one, a conducting layer and a photoresist layer are successively formed on the base substrate 101.
[0147]Step two, a mask is provided, and the mask only has a pattern for manufacturing the first electrode 103.
[0148]Step three, the pattern of the mask is skewed relative to a region where the first electrode is to be manufactured, so that the pattern of the mask can overlaps with the region where the first electrode 103 is to be manufactured and a region where the pattern layer 104 is to be manufactured.
[0149]Step four, under shielding of the mask, the photoresist layer of the region where the first electrode 103 is to be manufactured and the photoresist layer of the region where the pattern layer 104 is to be manufactured are exposed in different time.
[0150]Optionally, only the photoresist layer of the region where the first electrode 103 is to be manufactured or only the region where the pattern layer 104 is to be manufactured is irradiated by controlling a light source, so that the photoresist layer of the region where the first electrode 103 is to be manufactured and the photoresist layer of the region where the pattern layer 104 is to be manufactured are exposed in different time. Alternatively, under the condition of irradiating the whole mask by the light source, the region where the first electrode 103 is to be manufactured and the region where the pattern layer 104 is to be manufactured are exposed in different time by shielding the photoresist layer of the region where the pattern layer 104 is to be manufactured or the photoresist layer of the region where the first electrode 103 is to be manufactured.
[0151]Step five, the photoresist layer is developed to retain the photoresist layer of the region where the first electrode 103 is to be manufactured and the photoresist layer of the region where the pattern layer 104 is to be manufactured.
[0152]Step six, under shielding of the photoresist layer, the conducting layer is etched to form the pattern layer 104 and the first electrode 103 which are arranged at the same layer, made of the same material and are disconnected.
[0153]The second possible mode may include the following steps.
[0154]Step one, a conducting layer and a photoresist layer are successively formed on a base substrate 101.
[0155]Step two, a mask is provided, the mask has a first pattern for manufacturing a first electrode 103 and a second pattern for manufacturing a pattern layer 104, and the first pattern and the second pattern are disconnected.
[0156]Step three, under shielding of the mask, the photoresist layer of a region where the first electrode 103 is to be manufactured and the photoresist layer of a region where the pattern layer 104 is to be manufactured simultaneously exposed.
[0157]Step four, the photoresist layer is developed to retain the photoresist layer of the region where the first electrode 103 is to be manufactured and the photoresist layer of the region where the pattern layer 104 is to be manufactured.
[0158]Step five, under shielding of the photoresist layer, the conducting layer is etched to form the pattern layer 104 and the first electrode 103 which are arranged at the same layer, made of the same material and are disconnected.
[0159]Optionally, in the above two possible modes, after the pattern layer 104 and the first electrode 103 which are arranged at the same layer, made of the same material and are disconnected are formed, the step of stripping the photoresist layer may further be executed.
[0160]In some embodiments, in the above manufacturing method provided by the embodiments of the present disclosure, in the above step S3702, the forming the pattern layer 104 and the first electrode 103 on the base substrate may further be implemented through the following modes.
[0161]Ammonia gas and silane are used as reaction source gas to form an integrally-arranged insulating layer 106, and a flow ratio of ammonia gas to silane is greater than or equal to 2 and less than or equal to 8. For example, the flow ratio of ammonia gas to silane may be 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8 and the like.
[0162]The first electrode 103 is formed on the insulating layer 106 in a pixel open region on the base substrate 101, and the insulating layer 106 outside the pixel open region is reused as the pattern layer 104.
[0163]Optionally, after a base substrate 101 is provided, and before the insulating layer 106 which is arranged in a whole surface is formed taking ammonia gas and silane as the reaction source gas, the gate 71 of the transistor 107, the second electrode 109, the gate insulating layer 111, the active layer 74 of the transistor 107, the first pole 72 and the second pole 73 of the transistor, and the connection electrode 110 are formed on the base substrate 101 in sequence. The first pole and the second pole of the transistor and the connection electrode are arranged at the same layer. After the insulating layer 106 which is arranged in a whole surface is formed taking ammonia gas and silane as the reaction source gas, and before the first electrode is formed on the insulating layer 106 in the pixel open region, the first via hole V1, and the second via hole V2 penetrating through the insulating layer 106, and the third via hole V3 penetrating through the insulating layer 106 and the gate insulating layer 111 may further be formed simultaneously. The first via hole V1 is used for implementing electric connection between the second pole 73 of the transistor 107 and the first electrode 103, the second via hole V2 is used for implementing electric connection between the connection electrode 110 and the switching electrode 112, and the third via hole V3 is used for implementing electric connection between the switching electrode 112 and the second electrode 109. In some embodiments, the switching electrode 112 may be manufactured while the first electrode 103 is formed.
[0164]It needs to be explained that in the above manufacturing method provided by the embodiments of the present disclosure, the involved composition process forming each layer of structure not only may include part or all processes of deposition, photoresist coating, mask masking, exposure, developing, etching, photoresist stripping and the like, but also may include other processes, the details are subjected to the patterns that need to be formed by the composition process in the actual manufacturing process, which is not limited here. For example, a postbaking process may further be included after developing and before etching. The deposition process may be chemical vapor deposition, plasma enhanced chemical vapor deposition or physical vapor deposition, which is not limited here. The mask used in the masking process may be a half tone mask, a single slit mask or a gray tone mask, which is not limited here. Etching may be dry etching or wet etching, which is not limited here.
[0165]Based on the same inventive concept, embodiments of the present disclosure provide a display apparatus, including the above display substrate provided by the embodiments of the present disclosure. Since a principle for solving the problems of the display apparatus is similar to a principle for solving the problems of the above display substrate, the implementation of the display apparatus provided by the embodiments of the present disclosure may refer to the implementation of the above display substrate provided by the embodiments of the present disclosure, repetition is omitted.
[0166]In some embodiments, the above display apparatus provided by the embodiments of the present disclosure may be applied to a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator, an intelligent watch, a fitness bracelet, a personal digital assistant and any products or components with a display function. Optionally, the above display apparatus provided by the embodiments of the present disclosure is a liquid crystal display. The liquid crystal display may include a backlight module, and a display panel located on a light extraction side of the backlight module. The display panel includes a display substrate and an opposite substrate which are oppositely arranged, a liquid crystal layer located between the display substrate and the opposite substrate, a sealant surrounding the liquid crystal layer between the display substrate and the opposite substrate, a first alignment layer located on a side, close to the liquid crystal layer, of the display substrate, a second alignment layer located on a side, close to the liquid crystal layer, of the opposite substrate, a first polarizer located on a side, away from the liquid crystal layer, of the display substrate, and a second polarizer located on a side, away from the liquid crystal layer, of the opposite substrate. The backlight module may be a direct type backlight module, and may further be a side entry backlight module. The backlight module may include a light source, stacked reflector plates, a light guide plate, a diffusion plate, a prism set and the like. The light source may be a light-emitting diode, such as a mini LED or a micro LED.
[0167]Micro LEDs on the submillimeter or even micron scale are self-luminous devices like organic light-emitting diodes (OLED), and has a series of advantages of high brightness, ultra-low delay and oversized visual angle like the organic light-emitting diodes. The inorganic light-emitting diodes emit light based on metal semiconductors with more stable property and lower resistance, and have the advantages of lower power consumption, more high temperature resistance and low temperature resistance and longer service life compared with organic light-emitting diodes emit light based on organic matters. When the Micro LEDs are as a backlight source, a more precise dynamic backlight effect may be implemented, the screen brightness and contrast ratio are effectively improved, meanwhile, a glare phenomenon caused by traditional dynamic backlight between screen bright and dark regions may further be solved, and the visual sense experience is optimized.
[0168]In some embodiments, the above display apparatus provided by the embodiments of the present disclosure may include but is not limited to: a radio frequency unit, a network module, an audio output & input unit, a sensor, a display unit, a user input unit, an interface unit, a control chip and other components. Optionally, the control chip is a central processing unit, a digital signal processor, a system chip (SoC) and the like. For example, the control chip may further include a memory, may further include a power module and the like, and implements power supply and signal input and output functions through a wire and a signal line which are additionally arranged. For example, the control chip may further include a hardware circuit and computer executable codes. The hardware circuit may include a conventional very-large-scale integration (VLSI) circuit or a gate array and existing semiconductors such as a logic chip and a transistor and other discrete elements; and the hardware circuit may further include a field programmable gate array, a programmable array logic, a programmable logic device and the like.
[0169]In addition, those skilled in the art should understand that the above structure does not constitute the limitation of the above display apparatus provided by the embodiment of the present disclosure, in other words, the above display apparatus provided by the embodiment of the present disclosure may include the above more or less components, or a combination of some components, or different components.
[0170]Although the preferred embodiments of the present disclosure are described, it should be understood that those skilled in the art may make various modifications and variations to these embodiments without deviating from the spirit and scope of the present disclosure. In this way, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent art, the present disclosure also intends to include these modifications and variations.
Claims
What is claimed is:
1. A display substrate, comprising:
a base substrate;
an alignment layer on the base substrate;
a first electrode, located between the base substrate and the alignment layer and being in contact with the alignment layer; and
a pattern layer, located between the base substrate and the alignment layer and being in contact with the alignment layer;
wherein an orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the first electrode on the base substrate, and a ratio of a contact angle of the pattern layer to a contact angle of the first electrode is greater than or equal to 7/12 and less than 3/2;
wherein the pattern layer and the first electrode are arranged at a same layer and made of a same material;
there are a plurality of first electrodes, and the plurality of first electrodes are arranged in an array on the base substrate; the orthographic projection of the pattern layer on the base substrate is located in an orthographic projection of a row gap of the first electrodes on the base substrate;
the first electrode comprises a first strip electrode and a second strip electrode which are integrally arranged;
wherein an extension direction of the first strip electrode is intersected with a row direction, a column direction and an extension direction of the second strip electrode, and the extension direction of the second strip electrode is intersected with the row direction and the column direction; and
the pattern layer extends in the extension direction of the first strip electrode and/or the extension direction of the second strip electrode.
2. The display substrate according to
3. The display substrate according to
a line width of the pattern layer is same as:
a line width of the first strip electrode which extends in a same direction as the pattern layer; and/or
a line width of the second strip electrode which extends in a same direction as the pattern layer; and
a line distance of the pattern layer is same as:
a line distance of the first strip electrode which extends in a same direction as the pattern layer; and/or
a line distance of the second strip electrode which extends in a same direction as the pattern layer.
4. The display substrate according to
a plurality of block patterns arranged at intervals at the same row gap of the first electrodes;
wherein the block pattern extends in the row direction; or
strip patterns extending in the row direction at the row gap of the first electrodes;
wherein a length of the strip pattern in the row direction is same as a length of the row gap.
5. The display substrate according to
a first signal line;
wherein an orthographic projection of the first signal line on the base substrate is located in an orthographic projection of a column gap of the first electrodes on the base substrate; and
the orthographic projection of the pattern layer on the base substrate does not overlap the orthographic projection of the first signal line on the base substrate.
6. The display substrate according to
a transistor;
wherein at least part of the first signal line is electrically connected with the transistor; and
the orthographic projection of the pattern layer on the base substrate does not overlap an orthographic projection of the transistor on the base substrate.
7. The display substrate according to
a second signal line;
wherein an orthographic projection of the second signal line on the base substrate is located in the orthographic projection of the row gap of the first electrodes on the base substrate; and
the orthographic projection of the pattern layer on the base substrate is located in the orthographic projection of the second signal line on the base substrate.
8. The display substrate according to
9. The display substrate according to
a second signal line;
wherein an orthographic projection of the second signal line on the base substrate is located in the orthographic projection of the row gap of the first electrodes on the base substrate, and there are two second signal lines arranged at the same row gap; and
at the same row gap of the first electrodes, the orthographic projections of the two second signal lines on the base substrate are located in the orthographic projection of the pattern layer on the base substrate.
10. The display substrate according to
a first signal line and a second signal line which are intersected and mutually insulated;
wherein an orthographic projection of the first signal line on the base substrate is located in an orthographic projection of a column gap of the first electrodes on the base substrate, an orthographic projection of the second signal line on the base substrate is located in the orthographic projection of the row gap of the first electrodes on the base substrate, and there are two second signal lines arranged at the same row gap; and the first signal line comprises:
an island structure at an intersected position of the column gap of the first electrodes and a gap of the two second signal lines; and
the orthographic projection of the pattern layer on the base substrate is coincided with an orthographic projection of the island structure on the base substrate.
11. The display substrate according to
a second signal line, and
a gate,
wherein the second signal line and the gate are of an integral structure and the gate protrudes relative to the second signal line; and
the pattern layer comprises:
a plurality of first partitions intersected with a row direction and a column direction; and
a second partition extending in the row direction;
wherein an orthographic projection of the first partitions on the base substrate is located in an orthographic projection of the gate on the base substrate, and an orthographic projection of the second partition on the base substrate is located in an orthographic projection of the second signal line on the base substrate.
12. The display substrate according to
a second electrode located between a layer where the first electrode is located and the base substrate; wherein the orthographic projection of the first electrode on the base substrate overlaps with an orthographic projection of the second electrode on the base substrate; and/or
an insulating layer between a layer where the first electrode is located and a layer where the second electrode is located; wherein the first electrode shields a part of the insulating layer, and the insulating layer not shielded by the first electrode is reused as the pattern layer.
13. The display substrate according to
a positioning region for arranging a spacer;
wherein an orthographic projection of the positioning region on the base substrate is located in the orthographic projection of the pattern layer on the base substrate.
14. A manufacturing method of the display substrate according to
providing the base substrate;
forming the pattern layer and the first electrode on the base substrate, wherein the orthographic projection of the pattern layer on the base substrate does not overlap the orthographic projection of the first electrode on the base substrate, and the ratio of the contact angle of the pattern layer to the contact angle of the first electrode is greater than or equal to 7/12 and less than or equal to 3/2;
coating alignment liquid on the pattern layer and a layer where the first electrode is located; and
curing the alignment liquid to form the alignment layer.
15. The manufacturing method according to
forming the pattern layer and the first electrode which are arranged in a same layer and made of a same material on the base substrate by adopting a same mask; or
forming an insulating layer which is arranged on a whole surface taking ammonia gas and silane as reaction source gas, wherein a flow ratio of the ammonia gas to the silane is greater than or equal to 2 and less than or equal to 8; and forming the first electrode on the insulating layer in a pixel opening region of the base substrate, wherein the insulating layer outside the pixel opening region is reused as the pattern layer.
16. The manufacturing method according to
forming a conducting layer and a photoresist layer successively on the base substrate;
providing a mask, wherein the mask only has a pattern for manufacturing the first electrode;
skewing the pattern of the mask relative to a region where the first electrode is to be manufactured, so that the pattern of the mask overlaps the region where the first electrode is to be manufactured and a region where the pattern layer is to be manufactured;
exposing, under shielding of the mask, the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured in different time;
developing the photoresist layer to retain the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured; and
etching, under shielding of the photoresist layer, the conducting layer to form the pattern layer and the first electrode which are arranged in the same layer, made of the same material and are disconnected; or
forming a conducting layer and a photoresist layer successively on the base substrate;
providing a mask, wherein the mask has a first pattern for manufacturing the first electrode and a second pattern for manufacturing the pattern layer, and the first pattern and the second pattern are disconnected;
exposing, under shielding of the mask, the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured;
developing the photoresist layer to retain the photoresist layer of the region where the first electrode is to be manufactured and the photoresist layer of the region where the pattern layer is to be manufactured; and
etching, under shielding of the photoresist layer, the conducting layer to form the pattern layer and the first electrode which are arranged in the same layer, made of the same material and are disconnected.
17. A display apparatus, comprising the display substrate according to